Improved spring foe doors



@einen faire getint @Hirn JOSIAH Jf.' MAOKEY, OF SOUTH BROOKLYN, NEWYORK. Leners Pafenflvo. 71,772, lated liecember 3, 1867.

IMPRQVBD SPRING ron lpoorts.

TO ALL WHOM IT MAY OONCERN:

Be it known that I, J'SIAH J. MACKEY, of South Brooklyn, in the countyof Kings, and Stato of New York, have invented a new and improvedlDoor-Srpring; and that the following description, taken in connectionwith the accompanying drawings, hereinafter referred to, forms a fullzindexact specification of the same, wherein I have set forth the natureand principles of my saidimprovements, hy which my invention may hedistinguished from all others of a similar class, together with suchparts as I claim and desire to have secured to Ame by Letters Patent.

This invention relates to a new and improved application of a spring todoors, for the purpose of preventing the slamming of the same as theyclose. In the accompanying sheet of drawings- Figureil is a side view ofmy invention.

Figure 2, a plan or top view of' the same.

Similar letters of reference indicate like parts.

A represents a spring,`wh ieh is formed by splitting a bar of steel, B;or said har may be of iron or steel, forged or made separately, with thespring welded toit. The outer end of the bar B is curved or bentground,as shown at a in fig. 2; and the inner end o f said bar is forged with across-plate, b, which is eat in" the jamh, c, of the door-frame, andsecured thereto by screws, ol, the cuter surface of the cross-platebeingusl1 with the outer surfaceof the jamh c, so as to admit of thedoor, e, closing against the shoulder-piece, f, ofthe jamb, as will beunderstood by referring to iig. 2.

The spring A projects out from the bar B within the path of the movementof the door e, so that the door in closing willstrike the spring andforce it towards the bar B, the resistance of the springheing suiiicientto overcome the velocity of the door'before it comes in 'contact withthe shoulder-piece f, and prevent the former from slamming.

This spring may be applied'to the jamh of thel door-frame, or to thetop.crosspiece of-the frame, and even to the side piece, if desired. Ingeneral, however thc jamh o f the door-frame will bo themost convenientplace.

Having thus described my invention, I claim as new, and desire to'secureby Letters Patent- The spring constructed as described, consisting oftheparts, A B, secured to thc door-frame, substantially as described andfor the purpose specified.

' v JOSIAH J. MAGKEY. Witnesses:

WM. F. MeNMARA, ALEX. F. ROBERTS.

